Home / 51,890.71-77,784.05-20,257.28

Finding the Fourth Proportional to 51,890.71, 77,784.05 and 20,257.28

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Solution

The fourth proportional to 51,890.71, 77,784.05 and 20,257.28 is: 30,365.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,890.71 : 77,784.05 = 20,257.28 : x
  2. Step 2: Convert to fraction form
    51,890.71/77,784.05 = 20,257.28/x
  3. Step 3: Cross multiply
    51,890.71x = 77,784.05 × 20,257.28
  4. Step 4: Simplify right side
    51,890.71x = 1,575,692,891.46
  5. Step 5: Solve for x
    x = 1,575,692,891.46/51,890.71
  6. Step 6: Final answer
    x = 30,365.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.